apophysis7x/Plugin/cardiod.c
xyrus02 95a2f54683 ADMIN: migration complete
git-svn-id: https://svn.code.sf.net/p/apophysis7x/svn/trunk@1 a5d1c0f9-a0e9-45c6-87dd-9d276e40c949
2013-07-28 08:58:33 +00:00

53 lines
1.4 KiB
C

/*
Apophysis Plugin
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
// Must define this structure before we include apoplugin.h
typedef struct
{
double cardioid_a;
} Variables;
#include "apoplugin.h"
// Set the name of this plugin
APO_PLUGIN("cardioid");
// Define the Variables
APO_VARIABLES(
VAR_REAL(cardioid_a, 1.0)
);
// You must call the argument "vp".
int PluginVarPrepare(Variation* vp)
{
return TRUE; // Always return TRUE.
}
// You must call the argument "vp".
int PluginVarCalc(Variation* vp)
{
double a = atan2(FTy, FTx);
double r = VVAR * sqrt(sqr(FTx) + sqr(FTy) + sin( a * VAR(cardioid_a)) + 1.0 );
double s, c;
fsincos( a, &s, &c);
FPx += r * c;
FPy += r * s;
return TRUE;
}